The main objective of this article is to identify and evaluate the accelerating factor in the Iranian oil nationalization movement. The main question is: what was the accelerating factor that put the Iranian oil nationalization movement into practice? The article relies on the reform movement theory of Neil Smelser. For this purpose, fraud in the 16thnational election of the parliament, and establishment of Iranian National Front in objection to it, are studied as the accelerating factors to the Iranian national movement. Research methodology in this study is historical and referential type and the data has been collected through library studies.